For me, it's after commuting to work that I feel the need for a snack. Heck, I'm always hungry at work, but when I ride in, I feel like I've earned the snack. I try to keep it healthy with mixed nuts or something, but still I'm more likely to snack (and go back for a second/third handful) when I've ridden in.
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"